PLASTERING, DRYWALL, ACOUSTICAL, AND INSULATION WORK SPECIAL TRADE CONTRACTORS (Industry 1742) Establishments classified in this industry are primarily engaged in drywall, acoustical, and building insulation work; applying plaster, plain or ornamental; or the installation of lathing or other appurtenances to receive plaster. For additional examples, refer to the Standard Industrial Classification Manual: 1987 (SIC) published by the Office of Management and Budget, Executive Office of the President. During 1992, the establishments with paid employees classified in this industry accounted for $14.2 billion in total dollar value of business. Of this amount, $14.1 billion were for the value of construction work. These establishments paid out $4.7 billion for materials, components, and supplies and $1.2 billion for construction work subcontracted to others. Costs for selected power, fuels, and lubricants for the industry were $191 million. Value added for 1992 was $8.1 billion. There were 18,648 establishments with total employment averaging 206,670 during the year. Total payroll for 1992 was $4.9 billion. Larger establishments with 20 employees or more, while representing only 14 percent of the total number of employer establishments in this industry, accounted for 62 percent of all business done.